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| LTC3406AB-2_15 Datasheet, PDF (3/16 Pages) Linear Technology – 2.25MHz, 600mA Synchronous Step-Down Regulator in ThinSOT | |||
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LTC3406AB-2
ELECTRICAL CHARACTERISTICS The â denotes the speciï¬cations which apply over the full operating
temperature range, otherwise speciï¬cations are at TA = 25°C. VIN = 3.6V unless otherwise speciï¬ed.
SYMBOL
VRUN
IRUN
PARAMETER
RUN Threshold
RUN Leakage Current
CONDITIONS
MIN TYP MAX UNITS
â 0.3
1
1.5
V
â
±0.01 ±1
μA
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTC3406AB-2E is guaranteed to meet performance
speciï¬cations from 0°C to 85°C. Speciï¬cations over the â40°C to 85°C
operating temperature range are assured by design, characterization and
correlation with statistical process controls.
Note 3: TJ is calculated from the ambient temperature TA and power
dissipation PD according to the following formula:
LTC3406AB-2: TJ = TA + (PD)(250°C/W)
Note 4: The LTC3406AB-2 is tested in a proprietary test mode that
connects VFB to the output of the error ampliï¬er.
Note 5: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency.
Note 6: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the speciï¬ed maximum operating junction
temperature may impair device reliability.
Note 7: Limited by long term current density considerations.
TYPICAL PERFORMANCE CHARACTERISTICS
(From Figure 1a Except for the Resistive Divider Resistor Values)
Efï¬ciency vs Input Voltage
100
90
80
70
60
50
40
30
20
IL = 10mA
10
VOUT = 1.8V
0
IL = 100mA
IL = 600mA
2
3
4
5
6
OUTPUT CURRENT (mA)
3406AB2 G01
Efï¬ciency vs Load Current
100
VOUT = 1.2V
90
80
70
60
50
40
30
20
10
0
0.1
VIN = 2.7V
VIN = 3.6V
VIN = 4.2V
1
10
100
OUTPUT CURRENT (mA)
1000
3406AB2 G02
Efï¬ciency vs Load Current
100
VOUT = 2.5V
90
80
70
60
50
40
30
20
10
0
0.1
VIN = 2.7V
VIN = 3.6V
VIN = 4.2V
1
10
100
OUTPUT CURRENT (mA)
1000
3406AB2 G04
Efï¬ciency vs Input Voltage
100
90
80
70
60
50
40
30
20
IL = 10mA
10
VOUT = 2.5V
0
IL = 100mA
IL = 600mA
2
3
4
5
6
INPUT VOLTAGE (V)
3406AB2 G05
Efï¬ciency vs Input Voltage
100
90
80
70
60
50
40
30
20
IL = 10mA
10
VOUT = 1.2V
0
IL = 100mA
IL = 600mA
2
3
4
5
6
INPUT VOLTAGE (V)
3406AB2 G03
Reference Voltage vs
Temperature
0.615
VIN = 3.6V
0.610
0.605
0.600
0.595
0.590
0.585
â50 â25
0 25 50 75
TEMPERATURE (°C)
100 125
3406AB2 G06
3406ab2f
3
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